So, I installed the newest version of Tomato last week on my new Asus RT-N16. I set all the configs right for wireless and am seeing nice speeds. But the ethernet speeds from my gigabit connected workstation and server are horrible. If I try and play any resolution video off the other machine, it stutters or doesnt even play. I even had an issue loading a 10MB JPG earlier.

I didnt mess with any settings. I rebooted both PCs and it still doesnt work. I then reconnected the machines on another gigabit router I had and the issues went away. So, why could this be happening. Is there any setting I need to configure for better ethernet speeds?

I can only say that I'm able to stream wired or wirelessly via my RT-N16 Tomato Firmware v1.28.9052 MIPSR2-beta23 K26 USB Ext … to laptops, nettops, iPhones… to wired computers as well, Gb and 100Mb … It is working for me. Any chance your one workstation has some kind of weird duplex setting?

I recently picked up the Asus RT-N16 on sale after the Dlink DI-524 (don't laugh!) finally bit the bucket and flashed it with v1.28.9054 MIPSR2-beta K26 USB vpn3.6. I also encountered this stuttering while streaming video over to the media (NMT) player. This wouldn't occur for the first few minutes after turning on the NMT but when it started stuttering, it would occur at least once every minute and was obviously quite annoying, especially for high bit-rate streams. This occured for SMB shares, via a GB NIC on the computer.

CPU usage was low and QoS was not yet enabled. Disabling jumboframes on all devices and the RT-N16 resulted in no change. While looking for a solution, someone suggested that "Flow Control" be enabled for both RX/TX but it was already enabled on the NIC. I then played around with the other NIC settings and when I disabled "Large Send Offload (IPv4) on the NIC, it resolved the issue.

While the "Large Send Offload" option requires more CPU processing, I haven't noticed an increase on CPU load when bandwidth has reached its limit, although this may change when I've finalized my rule-set and enable QoS.